Anti-friction bearing

A rolling bearing comprising:

• an inner ring having an inner ring raceway surface on an outer circumferential surface, an outer ring having an outer ring raceway surface on an inner circumferential surface, and a plurality of rolling elements disposed between the inner ring raceway surface and the outer ring raceway surface in a freely rollable manner, characterized in that:
• the outer ring includes a plurality of oil holes penetrating in a radial direction at the same position in an axial direction and spaced apart in a circumferential direction;
• and
• circumferential phases of the plurality of oil holes are set to be θ≧45°, when the rolling bearing is viewed in the axial direction during rotation of the bearing, when the center of the rolling element passes through the center line of any one of the plurality of oil holes, the rolling element closest to the remaining oil hole is located at a position which intersects with the center line of the oil hole, and when an angle formed by a straight line passing through the center of the rolling element closest to the oil hole and perpendicular to a straight line passing through the center of the rolling bearing and a tangent at a contact point between the center line of the oil hole and the rolling element is set as θ when the rolling bearing is viewed from the axial direction.